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A student substitutes his unknown for the NaBrO3. The dichloroethene layer turns dark orange. Which ions could be ruled out and what test should be performed next?
When hydrochloric acid of 200 mL was mixed to a small piece of CaCO3 in the same calorimeter, the temperature increased by 4.25 degree celsius. determine the heat output for this reaction?
How many grams of diphenyl (C 12H10) must be dissolved in 655 g of benzene to lower the freezing point by 3 .20ºC.
Draw lewis Dot structures. Use model kits, styrofoam balls and/or gum drops to make a model of the molecule or ion. Be sure to place electron groups (toothpicks or sticks) as far apart as possible.
a sample of gas occupies 1.40 X 10 cubed mL at 25 degrees celcius and 760 mmHg. what volume will it occupy at the same temperature and 380 mmHg? which gas law is being used.
The boiling temperature is found to be 157 C(760 torr) as the first small amount of distillate is collected. The standard vapor pressures of n-propylcyclohexane and n-propylbenezene are known to be 769 toor and 725 torr
A 120g sample of an unknown substance was heated from 15oC to 30oC. The substance absorbed 458 joules of energy. What is the specific heat of this substance?
a)calculate the atom economy and reaction efficiency of your synthesis of isopentyl acetate. b) tell how the procedure of isopentyl acetate might be modifed to increase the reaction efficiency . c)Describe some green features of your syntheisi, an..
Identify the C-H out-of-plane bending vibrations in the infrared spectrum for 4-methylcyclohexene. What structural can be obtained
Calculate the amount of energy in kilojoules needed to change 135 of water ice at -10 degrees Celsius to steam at 125 degrees Celsius.
This is the given reaction CaC2(s) + 2H2O(l) = C2H2(g) + Ca(OH)2(aq) determine How much H2O is needed If 48 g of CaC2 are consumed in this reaction?
Titrations: Finding Mass Percent of Arsenic in a Pesticide, The arsenic in a 1.0211-g sample of a pesticide was converted to H3AsO4 by suitable treatment. The acid was then neutralized and exactly 40.00 mL of 0.05922M
What are bonding theories? Why are they important? What may they be used for. HI has a force contents of 314 Nm^-1 and a bond length of 160.92 pm.
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